Insulator for telegraph and telephone wires.



PATENTED SEPT. 11, 1906.

S. V. GRAVES & S. H, MGDANIEL. INSULATOE FOE TELEGRAPH AND TELEPHONE WIRES.

APPLICATION FILED NOV. 14, 1905.

UNITED STATES PATENT OFFICE.

SALATHIEL V. GRAVES AND SAMUEL H.

MODANIEL, OF MoFALL,

Specification of Letters Patent.

Patented Sept. 11, 1906.

Application filed November 14, 1905. Serial No. 287,357.

To all whom it may concern.-

Be it known that we, SALATHIEL V. GRAvEs and SAMUEL H. MoDANInL, citizens of the United States, residing at McFall, in the county of Gentry and State of Missouri, have invented certain new and useful Improvements in Insulators for Telegraph and Telephone Wires; and We do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to new and useful improvements in insulators for telegraph, telephone, and other electric wires, and comprises a casing made, preferably, of malleable iron and having two of its opposite sides recessed away adapted to allow the conductor- Wires to pass therethrough, the casing being so constructed as to receive an insulatingblock with a cover, which is held over the insulator-block by integral portions of the easing.

The invention consists, further, in various other details of construction and arrangements of parts, which will be hereinafter fully described and then specifically defined in the appended claims.

We illustrate our invention in the accompanying ch'awings, in which Figure 1 is a perspective view of our invcntion. Fig. 2 is a vertical sectional view through the insulator. Fig. 3 is a perspective view of the insulator with its cover removed. Fig. l is a detail view showing the line-wire securedv to an insulating-block.

Reference now being had to the details of the drawings by letter, A designates the easing, which is made, preferably, of malleable iron and has two of its faces recessed, as at A. The casing, which in the present instance is square-outlined in cross-section, has flanges B about the marginal edges of the openings in the sides, said. flange extending below each opening forming means to hold an ins ulati ngblock D in place. Said block, which may be of any suitable material, is shown as being recessed upon opposite edges adapted to re ceive the line-wire and fastening means, whereby said wire is secured to the ins ulatingblock. Rising from each corner of the easing are the integral arms 0, which, being of malleable iron, may be bent down over the cover E to hold the same in place. Said cover E is recessed upon its under face, adapted to fit over the top of the insulator-block, and has notches E upon its opposite edges to receive said lugs. It will be noted that said cover is of larger area than the top of the cas ing, overhanging the same a slight distance when applied thereto for the purpose of preventing any slect or rain from coming in con tact with the top of the insulating-block. After the cover has been adjusted in place the flexible lugs upon the casing are adapted to be bent over in the manner shown in the drawings, thereby forming a secure means for holding the insulator-block in place. The shank portion of said casing flares outward at its lower end, as shown, and on the bottom thereof is provided with spurs K, adapted to bite into a cross-arm or any other object on which the casing is desired to be mounted. Said shank portion has a central angular-outlined aperture for the reception of a bolt, spike, or other fastening means whereby the casing may be held to any object.

From the foregoing it will be noted that by the peculiar construction. of insulator shown means is provided for securely holding and protecting the insulatingdalock, which may be easily removed from the casing, if desired, by simply bending back the lugs and raising the top from the casing. By the arrangement of the cover as shown it will be observed that the insulating-block is protected from the elements-an essential in the prod uction of a satisfactory insulating device.

Having thus fully descril'lcd our invention, what we claim as new, and desire to secure by Letters Patent, is-- 1. An insulating device comprising a hollow casing made of malleable metal, portions of the sides of the casing being cut away, flexible lugs projecting from the casing, an insulating-block mounted within the casing, and a cover for said casing adapted to be held in place by said lugs which are bent over the top of the cover, as set forth.

2. An insulating device comprising a hol low casing of malleable metal, portions of the walls of the casing being cut away, flexible lugs projecting from the top of the casing, an insulating-block mounted within the casing, and a cover fitted over the casing and having potches in its opposite edges to receive said u s, th e cover to hold the same upon the casing, as set forth. 7 v V 3. An insulating device comprising a hollow metallic casing with opposite sides thereof cut away, flexible lugs-projecting from the top of the casing, an insulating-block fitted wlthin said casing, and a cover having notches upon'its 0 posite edges adapted to receive said lugs, it e under surface of said cover being recessed out and ad ated to fit over the top of the casing and b o ck, as set forth.

4. An insulating device comprising a hollow metallic casing having a shank portion the-latter being adapted to be bent over with spurs'uporf the bottom-"thereof: means for fastening said casing to a cross-arm or other object, an insulating-block mounted Within said casing, the sides ofthelatter being cut away, a cover to the casing, and flexible lugs upon the casing adapted to engage and hold saidcover'upon the casing, as set forth.

In testimony whereof we hereunto-aflix our signatures in the presence of two witnesses.

' SALATHIEL V, GRAVES. SAMUEL H. McDANIEL;

Witnesses:

E. O. LOGKWOOD, W. M. MODANIEL; 

